Heartbeat detector-transmitter



FIG. 1 is a front view of a heartbeat detector-transmitter showing ournew design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front perspective view thereof;

FIG. 8 is a rear perspective view thereof.

FIG. 9 is a referential view thereof showing the state in use byattaching the article with the hook members to an attachment belt andwinding the belt around a subject whose heartbeat is to be detected;and,

FIG. 10 is a referential view thereof showing the state in use bydirectly attaching the article with the hook members to such a garmentas a sports brassiere.

The ornamental design for a heartbeat detector-transmitter, as shown. 